Method and tool for surface texture evaluation

Details Method and tool for surface texture evaluation Method and tool for surface texture evaluation

2008-10-24

2011-12-27

Bali, Vikkram (Department: 2624)

Image analysis

Applications

Surface texture or roughness measuring

C356S004010, C356S005150, C382S106000

Reexamination Certificate

active

08085987

ABSTRACT:
Texture of a surface, for example concrete, is evaluated by capturing images of the surface facing the surface in a direction of an orthogonal axis extending perpendicularly from the surface while sequentially projecting light onto the surface from each of four light source positions spaced circumferentially about the orthogonal axis. A specularity condition is determined to exist in one of the four images by comparing intensities of the images directly with one another. If a specularity condition exists, three images of the four images which are least affected by specularity are used to determining a surface gradient of the surface.

REFERENCES:
patent: 7742169 (2010-06-01), Morita
patent: 7948514 (2011-05-01), Sato et al.
patent: 7973911 (2011-07-01), Takahashi
patent: 2006/0018514 (2006-01-01), Bankhead
patent: 2007/0222781 (2007-09-01), Kondo et al.
Barsky et al (The 4-Source photometric stereo Technique for three dimensional surfaces in the presence of highlights and shadows) , Oct. 2003.
Bringier et al (Photometric reconstruction of a dynamic textured surface from just one color image acquiaition), Mar. 2008.

Affiliated with

Also associated with

Rating

Method and tool for surface texture evaluation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and tool for surface texture evaluation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and tool for surface texture evaluation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4256785